MEDRADSC 3H03 Lecture Notes - Lecture 11: Zinc Cadmium Sulfide, Photocathode, Amorphous Silicon
8 Apr 2020
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Tft array: capacitor in the corner - connections between read & gate line. Don"t fluoro unless you have to, pulsing the fluoro: distance: tech should step back from the source when necessary, shielding: thyroid collar, lead apron, glasses, lead-glass screen. Most scatter goes sideways or back towards the x-ray tube, doesn"t go towards the ii: most scatter is at shoulders or below (we are well protected, less dose to thyroid, still some. Image 2: over table: head & neck is receiving most of scatter, as we move down, high level of thyroid collar (still does good at protecting us, smaller distance = decrease dose to patient. Slightly: what inclusions should be placed on a visual/environmental checklist for the fuoro machine & room? (sc35 below) General requirements: warning signs, markings, mechanical stability, indicator lights, indication of loading factors, irradiation control, controlling timer, x-ray tube shielding, x-ray beam filtration.
